Add new visualizations
Leonetienne
51
GCryptLib/visualizations/create-visualizations.sh
Executable file
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#!zsh
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echo "Make sure to have run all visualization scripts in!"
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echo "These generate the base images!"
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# Copy all images over, but as pngs, and a bit larger
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find ../build/ -maxdepth 1 -type f -name '*.bmp' |\
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xargs -I {}\
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convert "{}"\
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-filter box\
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-resize 256x\
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"{}.png"
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mv ../build/*.png .
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# Create a few gifs
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# Singleblock diffusion
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convert -delay 10 -loop 0 -dispose previous \
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"visualize-singleblock-diffusion-input.bmp.png"\
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"visualize-singleblock-diffusion-input-flip.bmp.png"\
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"visualize-singleblock-diffusion-input.gif"
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convert -delay 10 -loop 0 -dispose previous \
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"visualize-singleblock-diffusion-output.bmp.png"\
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"visualize-singleblock-diffusion-output-flip.bmp.png"\
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"visualize-singleblock-diffusion-output.gif"
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# Multiblock diffusion
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convert -delay 10 -loop 0 -dispose previous \
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"visualize-multiblock-diffusion-input.bmp.png"\
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"visualize-multiblock-diffusion-input-flip.bmp.png"\
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"visualize-multiblock-diffusion-input.gif"
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convert -delay 10 -loop 0 -dispose previous \
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"visualize-multiblock-diffusion-output.bmp.png"\
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"visualize-multiblock-diffusion-output-flip.bmp.png"\
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"visualize-multiblock-diffusion-output.gif"
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# Extreme input diffusion
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convert -delay 10 -loop 0 -dispose previous \
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"visualize-extreme-input-diffusion-input.bmp.png"\
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"visualize-extreme-input-diffusion-input-flip.bmp.png"\
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"visualize-extreme-input-diffusion-input.gif"
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convert -delay 10 -loop 0 -dispose previous \
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"visualize-extreme-input-diffusion-output.bmp.png"\
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"visualize-extreme-input-diffusion-output-flip.bmp.png"\
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"visualize-extreme-input-diffusion-output.gif"
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Before Width: | Height: | Size: 938 B |
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Before Width: | Height: | Size: 938 B |
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Before Width: | Height: | Size: 6.2 KiB |
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Before Width: | Height: | Size: 306 B |
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Before Width: | Height: | Size: 308 B |
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Before Width: | Height: | Size: 327 B |
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Before Width: | Height: | Size: 813 B |
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Before Width: | Height: | Size: 355 B |
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Before Width: | Height: | Size: 358 B |
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Before Width: | Height: | Size: 1.1 KiB |
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Before Width: | Height: | Size: 1.1 KiB |
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Before Width: | Height: | Size: 1.1 KiB |
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Before Width: | Height: | Size: 7.7 KiB |
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Before Width: | Height: | Size: 1.1 KiB |
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Before Width: | Height: | Size: 1.1 KiB |
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Before Width: | Height: | Size: 7.7 KiB |
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Before Width: | Height: | Size: 442 B |
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Before Width: | Height: | Size: 443 B |
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Before Width: | Height: | Size: 3.6 KiB |
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After Width: | Height: | Size: 335 B |
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After Width: | Height: | Size: 324 B |
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After Width: | Height: | Size: 908 B |
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After Width: | Height: | Size: 314 B |
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After Width: | Height: | Size: 1.4 KiB |
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After Width: | Height: | Size: 1.4 KiB |
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After Width: | Height: | Size: 10 KiB |
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After Width: | Height: | Size: 357 B |
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After Width: | Height: | Size: 358 B |
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After Width: | Height: | Size: 451 B |
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After Width: | Height: | Size: 448 B |
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After Width: | Height: | Size: 1.1 KiB |
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After Width: | Height: | Size: 1.1 KiB |
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After Width: | Height: | Size: 7.9 KiB |
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After Width: | Height: | Size: 445 B |
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After Width: | Height: | Size: 1.4 KiB |
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After Width: | Height: | Size: 1.4 KiB |
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After Width: | Height: | Size: 10 KiB |
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After Width: | Height: | Size: 50 KiB |
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After Width: | Height: | Size: 168 KiB |
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After Width: | Height: | Size: 168 KiB |
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After Width: | Height: | Size: 56 KiB |
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After Width: | Height: | Size: 168 KiB |
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After Width: | Height: | Size: 56 KiB |
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After Width: | Height: | Size: 358 B |
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After Width: | Height: | Size: 359 B |
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After Width: | Height: | Size: 1.1 KiB |
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After Width: | Height: | Size: 444 B |
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After Width: | Height: | Size: 450 B |
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After Width: | Height: | Size: 441 B |
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After Width: | Height: | Size: 3.6 KiB |
43
readme.md
@ -131,31 +131,30 @@ future output.
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#### Single-block diffusion
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`"Hello :3"` in binary, and it's ciphertext:
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Now, let's flip a single bit in the input:
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One bit flipped, and again the corresponding ciphertext:
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Let's gif them together, to better see the difference:
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As shown, flipping even a single bit, affects the entire ciphertext.
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#### What about input longer than a single block?
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Input, and ciphertext:
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Notice how the ciphertext doesn't change until the block containing the bitflip is reached? This is a limitation of cipher block chaining.
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@ -163,14 +162,30 @@ Notice how the ciphertext doesn't change until the block containing the bitflip
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How non-transparent is the cipher with extreme inputs? Even with a super problematic key?:
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Input, key, and ciphertext:
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Notice how even cleartexts that are almost completely uniform, with a key that is just zeores, will produce ambiguous ciphertexts.
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I darkened the input gif, as to not cause disorientation by flickering.
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Notice how even cleartexts that are completely uniform, with a key that is almost just zeores, will still produce ambiguous ciphertexts.
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### What about the PRNG's distribution?
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Check it out, here are the distributions of a few different getter-methods, some in black/white, some in grayscale, some in color.
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Blackwhite - GetBit(), Grayscale - GetRandom<T>(), and Grayscale - operator():
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Color - GetRandom<T>(), Color - operator(), and Color - GetBlock():
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## Noteworthy:
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* This is no fixed algorithm. Newer versions may very well be unable to decrypt ciphertexts encrypted with earlier versions.
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